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breakpoints/1901: Setting watchpoint to a virtual address leading to a crash.


>Number:         1901
>Category:       breakpoints
>Synopsis:       Setting watchpoint to a virtual address leading to a crash.
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 23 20:28:01 UTC 2005
>Closed-Date:
>Last-Modified:
>Originator:     Vamsi Krishna Kundeti
>Release:        6.1
>Organization:
>Environment:
Linux SUSE-9.0 
>Description:
Hello All,

I'am trying to examine a for changes to a structure at a some virtual address( ex 0x2a9794c570 ) on a 64-bit platform on a linux kernel 2.6.5-7-smp. 

Since I remembered the virtual address of this global structure I to set a watchpoint on a content of this structure ex
The structure (kkt)is  {time=0, nextTime=90007 ....} 

now I want to watch nextTime so I set a watchpoint like this

watch *((kkt *)0x2a9794c570).nextTime

from then onwards giving any command to gdb says Junk after the end of expression
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:


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